Can i use one connector instead of two
the card came with a pcie to dual molex can i just use one molex
No you cant it needs the feed from 2 molex conectors.
@ g00fysmiley I think you are a bit confused All GeForce GTS 450 variants require just a single PCI-Express power connector not two.
If your PSU dosent have a PCIE cinnector and it dosent hav e2 Molex conectors then it probably cant support the card anyway.